Finding the Fourth Proportional to 9,281.86, 12,807.12 and 5,507.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,281.86 : 12,807.12 = 5,507.89 : x
2. Step 2: Convert to fraction form
   9,281.86/12,807.12 = 5,507.89/x
3. Step 3: Cross multiply
   9,281.86x = 12,807.12 × 5,507.89
4. Step 4: Simplify right side
   9,281.86x = 70,540,208.18
5. Step 5: Solve for x
   x = 70,540,208.18/9,281.86
6. Step 6: Final answer
   x = 7,599.79